23397111191 has 2 divisors, whose sum is σ = 23397111192. Its totient is φ = 23397111190.

The previous prime is 23397111181. The next prime is 23397111211. The reversal of 23397111191 is 19111179332.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23397111191 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23397111181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11698555595 + 11698555596.

It is an arithmetic number, because the mean of its divisors is an integer number (11698555596).

Almost surely, 2^23397111191 is an apocalyptic number.

23397111191 is a deficient number, since it is larger than the sum of its proper divisors (1).

23397111191 is an equidigital number, since it uses as much as digits as its factorization.

23397111191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 38.

The spelling of 23397111191 in words is "twenty-three billion, three hundred ninety-seven million, one hundred eleven thousand, one hundred ninety-one".